**4. From education for sustainable development to education for circular economy**

Both, younger professionals, who have just started working, and senior professionals need to integrate circular economy in their daily activity. However, they have little or no knowledge on this field because the concept of circular economy did not exist at the time they completed their studies. Therefore, special efforts must be made in order to create a knowledge and competence base to foster circular innovation at all levels of education as well as to promote lifelong learning in this field. The integration of Circular Economy and Systems Thinking into the curricula of higher education institutions should be encouraged to help to raise sustainability awareness and transform our mentality [18, 32].

According to the Ellen MacArthur Foundation, the way people think shapes the world around them and, people's ways of thinking are built throughout their process of learning. The transition from linear to circular economy requires people to transform the way they create products, services, and systems.

In order to support people's learning about Circular Economy, the Ellen MacArthur Foundation places an emphasis on interdisciplinary, project-based, and participatory approaches [33]. This Foundation's aim is to help people understand how they can influence the complex systems around them.

According to other experts such as Sitra, the Finnish Innovation Fund for a sustainable future, to create a Circular Economy society, circular industries need a new kind of expertise, with co-operation between silos, a development of the operating environment and a general change in attitudes and operating methods. Professionals, experts and decision-makers, both now and in the future, will play a decisive role in building a new future, and education plays an important role in preparing those experts on Circular Economy for our near future [34].
